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1. 发明授权

US5838989A Common interface for a network having different communication media employing a carrier sense multiple access with collision detection (CSMA/CD) protocol 失效
标题翻译：具有使用具有冲突检测（CSMA / CD）协议的载波侦听多路访问的不同通信介质的网络的公共接口
公开(公告)号：US5838989A
公开(公告)日：1998-11-17
申请号：US560173
申请日：1995-11-17
申请人： Jerry D. Hutchison , Henry S. Yang , William C. Mallard, Jr.
发明人： Jerry D. Hutchison , Henry S. Yang , William C. Mallard, Jr.
IPC分类号： H04L12/413 , H04L12/44 , H04L29/06 , G06F13/00
CPC分类号： H04L12/40032 , H04L12/413 , H04L12/44 , H04L29/06 , H04L69/18
摘要： A switchable interface for conveniently coupling a network station of the CSMA/CD type to a network having any of a variety of communication media. The invention provides a single interface connector through which connection may be made directly to a twisted-pair medium, using the 10BASE-T protocol, or to a medium of a different type, through an AUI protocol and an appropriate media attachment unit. The interface connector has pin assignments chosen to minimize adverse effects of misconfiguring the station by connecting to a network having a protocol that is different from the one selected in the switchable interface. In one form of the invention, the switchable interface has the ability to determine the protocol being used by the network to which it is connected, and to switch the interface accordingly. Use of the common interface reduces station equipment cost and provides for increased user convenience, since only a single connector is needed to connect to a variety of media types.
摘要翻译：一种可切换接口，用于将CSMA / CD类型的网络站方便地耦合到具有各种通信介质中的任何一种的网络。本发明提供了一个单一接口连接器，通过AUI协议和适当的媒体连接单元，通过它可以使用10BASE-T协议或通过不同类型的介质将连接直接连接到双绞线介质。接口连接器具有选择的引脚分配，以通过连接到具有不同于在可切换接口中选择的协议的网络的网络来最小化错误地配置站的不利影响。在本发明的一种形式中，可切换接口具有确定被连接到的网络使用的协议的能力，并相应地切换接口。使用通用接口可降低站设备成本，并提供增加的用户便利性，因为只需要一个连接器来连接各种介质类型。

2. 发明授权

US5481538A Frame removal mechanism for token ring networks using one or more start strip delimiter frames or circulation time interval 失效
标题翻译：使用一个或多个起始条带分隔符帧或循环时间间隔的令牌环网络的帧去除机制
公开(公告)号：US5481538A
公开(公告)日：1996-01-02
申请号：US866958
申请日：1992-04-09
申请人： Henry S. Yang , K. K. Ramakrishnan , Barry Spinney
发明人： Henry S. Yang , K. K. Ramakrishnan , Barry Spinney
IPC分类号： H04L12/433 , H04L12/46
CPC分类号： H04L12/4637 , H04L12/433
摘要： Frame processing apparatus, and a related method for its operation, for use in a station connected to a token ring network, to ensure rapid stripping of frames from the network without reference to source addresses in the frames, and in spite of the possible presence of extraneous no-owner frames on the network. The adverse effects of extraneous no-owner frames are avoided by any of three techniques. First, transmitted information frames are preceded by a start strip delimiter frame and followed by an end strip delimiter frame. The process strips all incoming frames (except tokens and ring initialization frames, which are specially handled), but does not count the stripped frames until the start strip delimiter frame is detected. Therefore, extraneous frames preceding the transmitted information frames will be stripped but not counted, and all of the transmitted frames will be stripped. In another approach, an estimated stripping time is used to terminate stripping. Frame counters are not then needed and extraneous frames will be stripped prior to the desired information frames. A third approach is to preset the transmitted frame count to some selected value, so that more frames will be stripped than were transmitted. Thus, preceding extraneous frames will be stripped, but the end strip delimiter will still terminate stripping and preclude overstripping.
摘要翻译：帧处理装置及其操作的相关方法，用于连接到令牌环网络的站，以确保帧的快速剥离，而不参考帧中的源地址，并且尽管可能存在无线网络上的无人机框架。通过三种技术中的任何一种避免了外来的非所有权框架的不利影响。首先，发送的信息帧之前是开始条带分隔符帧，后跟一个结束条带分隔符帧。该进程将剥离所有传入的帧（除特殊处理的令牌和环初始化帧外），但在检测到起始条带定界符帧之前不计算剥离的帧。因此，发送的信息帧之前的外部帧将被剥离但不被计数，并且所有发送的帧将被剥离。在另一种方法中，使用估计的剥离时间来终止剥离。然后不需要帧计数器，并且在所需信息帧之前将剥离无关帧。第三种方法是将发送的帧计数预设为某些选定的值，以便比传输更多的帧被剥离。因此，以前的外部框架将被剥离，但是终端条带分隔符将仍然终止剥离并排除超标。

3. 发明授权

US5410535A Automatic selection of an interface for ethernet stations 失效
标题翻译：自动选择以太网站的接口
公开(公告)号：US5410535A
公开(公告)日：1995-04-25
申请号：US907950
申请日：1992-07-02
申请人： Henry S. Yang , Jerry D. Hutchison
发明人： Henry S. Yang , Jerry D. Hutchison
IPC分类号： H04L12/413 , H04L12/44 , H04L29/06 , H04L1/24
CPC分类号： H04L12/40176 , H04L12/413 , H04L12/44 , H04L29/06
摘要： Method and apparatus for automatically switching an Ethernet station interface to choose between two protocols and, possibly, two external connector configurations, to adapt the station automatically to the correct one of two communication media types, such as the twisted-pair medium served by the 10BASE-T protocol, and other media types, served by the attachment unit interface (AUI). The invention continually tests for proper operation in the currently selected protocol, and switches to the other protocol upon failure of a test. If one of two available external connectors is used to connect the station to a network, the invention chooses between the connectors automatically, such that manual switching between them is not required.
摘要翻译：用于自动切换以太网站接口以在两个协议之间进行选择的方法和装置，以及可能的两个外部连接器配置，以使站自动适应两种通信介质类型中的正确的一种，诸如由10BASE服务的双绞线介质 -T协议和其他媒体类型，由附件单元接口（AUI）提供。本发明在当前选择的协议中持续测试正确的操作，并且在测试失败时切换到另一个协议。如果使用两个可用的外部连接器之一将站点连接到网络，则本发明自动地在连接器之间选择，使得它们之间的手动切换不是必需的。

4. 发明授权

US5596575A Automatic network speed adapter 失效
标题翻译：自动网速适配器
公开(公告)号：US5596575A
公开(公告)日：1997-01-21
申请号：US435923
申请日：1995-05-05
申请人： Henry S. Yang , Donald L. Post , Wen-Yi Huang
发明人： Henry S. Yang , Donald L. Post , Wen-Yi Huang
IPC分类号： H04L12/44 , H04L29/06 , H04J3/22
CPC分类号： H04L12/44 , H04L29/06 , H04L69/18 , H04L69/24
摘要： A network adapter for interfacing between a communication network and a host computer operating as a network device, and a method of operation of these components. The adapter is initially conditioned to transmit at a lower of two possible speeds, such as 10 Mbps instead of 100 Mbps, and then senses at which speed the network is operating, before matching to this sensed speed, either the higher speed or the lower speed. If the sensed speed is the lower speed, the adapter transmits a burst of high-speed signals and senses again for high-speed operation. If the network has not switched to high-speed operation, the adapter is conditioned for low-speed operation. After the adapter is conditioned for low-speed or high-speed operation, the network speed is continually sensed and, if the network is not operating at the selected speed for some preselected period of time, the adapter is returned to its initial low-speed state to begin network speed sensing over again.
摘要翻译：用于在通信网络和作为网络设备操作的主机之间进行接口的网络适配器，以及这些组件的操作方法。适配器最初被调节为以两个可能的速度（例如10Mbps而不是100Mbps）的较低速度进行传输，然后在匹配到该感测速度之前感测网络正在运行的速度，即更高速度或更低速度。如果感测到的速度是较低的速度，则适配器传输一连串的高速信号并再次感测高速操作。如果网络没有切换到高速操作，则适配器处于低速运行状态。在将适配器调节为低速或高速运行后，网络速度将不断被检测到，如果网络在预选的时间段内没有以选定的速度运行，则适配器返回初始低速状态再次开始网速检测。

5. 发明授权

US5418784A Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling the interpacket gap in the event of channel capture 失效
标题翻译：在以太网类型的网络中使用的方法和装置，通过在信道捕获的情况下控制分组间隙来改善公平性
公开(公告)号：US5418784A
公开(公告)日：1995-05-23
申请号：US86443
申请日：1993-06-30
申请人： Kadangode K. Ramakrishnan , Henry S. Yang , William R. Hawe , Anthony G. Lauck
发明人： Kadangode K. Ramakrishnan , Henry S. Yang , William R. Hawe , Anthony G. Lauck
IPC分类号： H04L12/413 , H04J3/14
CPC分类号： H04L12/413
摘要： A technique for modifying the IEEE 802.3 standard for selecting transmit-to-transmit interpacket gap (IPG) intervals in a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, in the event that a node has captured the network communication channel. If there is a small number of active nodes on the network, one node may capture the channel and the standard backoff algorithm makes it increasingly unlikely for another node to transmit. The new technique provides for less aggressive, i.e. longer, interpacket gap (IPG) intervals to be used by a node that has captured the channel, thereby increasing the likelihood that another node will gain access.
摘要翻译：在节点已经捕获了网络通信信道的情况下，修改用于在具有冲突检测（CSMA / CD）网络的载波侦听多路访问中选择发送到发送分组间隙（IPG）间隔的IEEE 802.3标准的技术。如果网络上存在少量活动节点，则一个节点可以捕获该信道，并且标准退避算法使得另一节点不太可能传输。新技术提供了较少的积极性，即较长的间隔间隔（IPG）间隔，以被捕获信道的节点使用，从而增加了另一个节点获得访问的可能性。

6. 发明授权

US5404353A Dynamic defer technique for traffic congestion control in a communication network bridge device 失效
标题翻译：通信网桥设备中流量拥塞控制的动态延迟技术
公开(公告)号：US5404353A
公开(公告)日：1995-04-04
申请号：US241938
申请日：1994-05-12
申请人： Siman-Tov Ben-Michael , Philip P. Lozowick , Henry S. Yang
发明人： Siman-Tov Ben-Michael , Philip P. Lozowick , Henry S. Yang
IPC分类号： H04L12/46 , H04L12/56
CPC分类号： H04L47/30 , H04L12/46 , H04L47/10 , H04L47/135
摘要： A technique for controlling access to a bridge connected to at least two networks, such that network collisions are reduced, transmit live-lock conditions are eliminated, and buffer memory requirements are minimized. For at least one target network of the two networks, two dynamic lists are maintained, to keep track of data packets received from the target network and not yet forwarded, and to keep track of data packets stored for forwarding to the target network, but not yet forwarded. The target network uses a half-duplex medium and a CSMA/CD (Carrier Sense Multiple Access with Collision Detection) protocol. The invention operates by dynamically adjusting an inter packet gap (IPG) betweens data packets forwarded to the target network, such that stations on the target network are, under selected conditions, given an extended opportunity to transmit. The invention may also be used in conjunction with other techniques for reducing traffic congestion, such as adjusting network protocol parameters used in the target network, to either guarantee or deny priority to the target network in the event of a collision, based on the continually observed status of the two lists.
摘要翻译：控制对连接到至少两个网络的桥接器的访问的技术，使得减少网络冲突，消除传输实时锁定条件，并且缓冲存储器需求被最小化。对于两个网络的至少一个目标网络，维护两个动态列表，以跟踪从目标网络接收的并且尚未转发的数据分组，并且跟踪存储的用于转发到目标网络的数据分组，而不是跟踪但转发。目标网络使用半双工介质和CSMA / CD（具有冲突检测的载波侦听多路访问）协议。本发明通过动态地调整转发到目标网络的数据分组之间的分组间间隔（IPG）来操作，使得目标网络上的站在选择的条件下给予扩展的发送机会。本发明还可以与用于减少交通拥堵的其他技术结合使用，例如调整在目标网络中使用的网络协议参数，以便在碰撞的情况下基于持续观察到的来保证或拒绝目标网络的优先级两个列表的状态。

7. 发明授权

US5315597A Method and means for automatically detecting and correcting a polarlity error in twisted-pair media 失效
标题翻译：用于自动检测和纠正双绞线介质极性错误的方法和手段
公开(公告)号：US5315597A
公开(公告)日：1994-05-24
申请号：US880455
申请日：1992-05-08
申请人： Henry S. Yang , William C. Mallard, Jr.
发明人： Henry S. Yang , William C. Mallard, Jr.
IPC分类号： H04L12/26 , H04L12/40
CPC分类号： H04L43/00 , H04L12/2602
摘要： A circuit for incorporation into LAN-compatible devices uses both the link integrity test (LIT) pulses and the end of frame delimiter (EOF) waveform information in received data transmissions to detect polarity errors on the twisted-pair media to which the devices are connected. The circuit integrates this information and a new auto-polarity detection/correction algorithm with the LIT algorithm of the IEEE 10 Base T standard to provide a stable and reliable twisted-pair link operation. Also, once the circuit is in its normal operational stage, it will not declare that a link is faulty unless it fails to receive a LIT pulse or an EOF waveform within a time-out period that is in accord with the IEEE standard. Therefore, the circuit is quite insensitive to line noise.
摘要翻译：用于并入LAN兼容设备的电路使用接收数据传输中的链路完整性测试（LIT）脉冲和帧定界符（EOF）波形信息的结尾来检测设备连接到的双绞线介质上的极性错误。该电路将该信息和新的自动极性检测/校正算法与IEEE 10 Base T标准的LIT算法集成，以提供稳定可靠的双绞线链路操作。此外，一旦电路处于正常的运行阶段，除非在与IEEE标准相符的超时周期内不能接收到LIT脉冲或EOF波形，否则不会声明链路故障。因此，电路对线路噪声非常不敏感。

8. 发明授权

US5305306A Station-to-station full duplex communication in a token ring local area network 失效
标题翻译：令牌环局域网中的站到站全双工通信
公开(公告)号：US5305306A
公开(公告)日：1994-04-19
申请号：US23741
申请日：1993-02-25
申请人： Barry A. Spinney , Henry S. Yang , William R. Hawe
发明人： Barry A. Spinney , Henry S. Yang , William R. Hawe
IPC分类号： H04L5/14 , H04L12/433 , H04J3/02 , H04L12/42
CPC分类号： H04L12/433 , H04L5/1423
摘要： A technique for establishing and maintaining full duplex communication between two stations connected to a token ring network, without physically reconfiguring the station connections or otherwise disturbing the network. In an auto-configuration full duplex mode of operation, each station ascertains whether there are only two active stations on the network and, if so, performs an exchange of frames with the other station to establish full duplex communication. One way to ascertain whether only two stations are active is for each station to transmit periodically a neighbor information frame, which contains the identities of the source station and the source station's nearest upstream neighbor. Once established, full duplex communication can proceed at a greater bandwidth than communication in a token ring network, and without latency delays and distance limitations associated with token ring networks. Periodic checks are made by each station in full duplex communication, to ascertain if the other station is still participating or if any third station has become active. In either case, stations in the auto-configuration mode revert to token ring mode automatically. In a variant form of the invention, stations can operate in a fixed full duplex mode, in which the detection of tokens or third stations are merely reported and do not necessarily result in reversion to the token ring mode.
摘要翻译：一种用于在连接到令牌环网络的两个站之间建立和维持全双工通信的技术，而无需物理地重新配置站点连接或以其他方式干扰网络。在自动配置全双工操作模式下，每个站确定网络上是否只有两个活动站，如果是，则与其他站执行帧建立全双工通信。确定只有两个站是活动的一种方式是每个站周期性地发送包含源站和源站最近的上游邻居的标识的邻居信息帧。一旦建立，全双工通信可以以比令牌环网络中的通信更大的带宽进行，并且没有与令牌环网络相关联的延迟延迟和距离限制。每个台站进行全双工通信进行定期检查，以确定其他站是否仍在参与，或者任何第三站是否已经活动。在任一情况下，自动配置模式下的站自动恢复为令牌振铃模式。在本发明的变型形式中，站可以以固定的全双工模式操作，其中仅报告令牌或第三站的检测，并且不一定导致向令牌环模式的逆转。

9. 发明授权

US5291491A Avoidance of false re-initialization of a computer network 失效
标题翻译：避免计算机网络的虚假重新初始化
公开(公告)号：US5291491A
公开(公告)日：1994-03-01
申请号：US643971
申请日：1991-01-22
申请人： Jerry D. Hutchison , Henry S. Yang
发明人： Jerry D. Hutchison , Henry S. Yang
IPC分类号： H04L12/433 , H04L12/46 , H04L12/42
CPC分类号： H04L12/4625 , H04L12/433
摘要： RingOp/Claim oscillations due to duplicate addresses and transmit aborts are avoided by using token preserver frames to reset the TVX timer in a station. A communications network having a plurality of stations capable of transmitting frames onto the network, and the stations capable of detecting transmission on the network, and the stations capable of taking predetermined action in the absence of detecting the transmission for a predetermined first time interval, and a first timer for measuring the predetermined first time interval. Measuring a second predetermined time interval, the second predetermined time interval being chosen to be less than the first predetermined time interval; transmitting a reset frame onto the network by a selected station at time intervals substantially equal to the second predetermined time interval, and the reset frames being capable of causing a station to reset the first timer to a beginning value. The network may be a token controlled ring. The reset frame may be a token preserver frame.
摘要翻译： RingOp /通过使用令牌保留帧来重置站中的TVX定时器来避免由于重复的地址和发送中止引起的振荡。一种通信网络，具有能够将帧发送到网络上的多个站，以及能够检测网络上的传输的站，以及能够在没有以预定的第一时间间隔检测到传输的情况下采取预定动作的站;以及用于测量预定的第一时间间隔的第一定时器。测量第二预定时间间隔，所述第二预定时间间隔被选择为小于所述第一预定时间间隔; 在基本上等于第二预定时间间隔的时间间隔内，通过所选择的站将复位帧发送到网络上，并且复位帧能够使站将第一定时器重置为起始值。网络可以是令牌控制的环。复位帧可以是令牌保留帧。

10. 发明授权

US06532212B1 Trunking inter-switch links 有权
公开(公告)号：US06532212B1
公开(公告)日：2003-03-11
申请号：US09964184
申请日：2001-09-25
申请人： Stuart R. Soloway , Henry S. Yang , David D. Beal
发明人： Stuart R. Soloway , Henry S. Yang , David D. Beal
IPC分类号： G06F1100
CPC分类号： H04L45/123 , H04L45/00 , H04L45/24 , H04L45/245 , H04L45/38 , H04L47/10 , H04L47/11 , H04L47/122 , H04L47/29 , H04L49/25 , H04L49/30 , H04L49/357 , H04L49/552 , Y02D50/30
摘要： A method and apparatus for routing frames through a fibre channel fabric to make the most efficient possible use of redundant inter-switch links between neighboring switches. The inter-switch links may have different bandwidths. The flow between adjacent switches is monitored to determine various local usage statistics and periodically adjust routing tables to move data flows from congested links to lightly loaded links.

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